Comparison

Echo Loop vs Kay English Learning

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Echo Loop

This app uses a science-based, eight-stage spaced repetition system to improve English listening and speaking skills. It guides users through blind listening, intensive listening, sentence repetition, and paragraph retelling, with AI feedback and vocabulary tools.

Highlights
  • Eight-stage spaced repetition learning
  • Blind and intensive listening modes
  • AI-assisted sentence repetition with feedback
  • Paragraph retelling with keyword generation
  • Bookmarking for sentences and vocabulary
  • Vocabulary flashcard review
  • Learning progress tracking
Features
Read full description

Echo Loop is a science-based English listening and speaking training app. It helps you turn unfamiliar audio into real understanding and build fluency through repetition and retelling. The app combines a complete listening and speaking training loop with spaced repetition. It automatically schedules review tasks, reminds you to practice, and guides you step by step, so you can focus on listening and speaking instead of managing the process yourself. 【Eight-stage spaced repetition】 Each audio item follows an eight-stage learning cycle: initial learning, same-day review, reviews on Days 1, 2, 4, 7, and 14, and completion on Day 28. The app automatically schedules each review to help turn short-term memory into long-term memory. 【Complete initial learning flow】 The initial learning stage includes four steps: • Blind Listening: Listen to the full audio without the transcript, get the general meaning, and rate the difficulty. • Intensive Listening: Listen sentence by sentence. For difficult sentences, view the transcript and save unfamiliar sentences and words. • Sentence Repetition: Repeat saved sentences with transcript support. The number of repetitions is adjusted based on difficulty, and each recording receives instant AI feedback. • Paragraph Retelling: Listen paragraph by paragraph and retell what you hear in your own words with keywords generated by the app. 【Review stages】 From Day 1 to Day 28, review focuses on blind listening, sentence repetition, and paragraph retelling. Retelling segments gradually become longer, helping you build a stronger link between listening input and speaking output. 【Multiple playback options】 Choose from full audio playback, sentence-by-sentence playback, and saved sentences only. You can also adjust repeat count, pauses between sentences, and retelling length. 【Bookmarked sentences and vocabulary】 • Save difficult sentences with one tap and review them across all your audio materials. • Use a built-in local dictionary with phonetic transcriptions, definitions, pronunciations, Collins star ratings, and exam tags for bookmarked words. • Saved words are linked to their source audio and original sentences, so you can learn vocabulary in context. 【Vocabulary flashcard review】 Review words with flashcards showing the word and pronunciation on the front, and definitions plus the original example sentence on the back. It also supports auto flip, smart sorting, and progress tracking. 【AI-assisted learning】 AI can automatically generate English subtitles. During intensive listening, you can view subtitles, AI translations, and grammar explanations. Subtitles can be shown as full sentences or thought groups, helping you recognize collocations in context instead of memorizing isolated words. 【Learning progress tracking】 Track your study streak, listening input, speaking output, and vocabulary growth. You can also resume anytime from where you left off. 【Free Practice Mode】 Besides the guided learning flow, you can also use Free Practice Mode. You can adjust playback speed, choose whether to show subtitles, and save difficult sentences and words. Import the English audio you want to understand quickly, and start practicing listening and speaking in a more effective way. Subscription Information Your subscription will automatically renew unless canceled at least 24 hours before the end of the current period. You can manage or cancel your subscription anytime in your Apple ID account settings. Payment will be charged to your Apple ID account upon confirmation of purchase. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.echo-loop.top/privacy

About

Kay English Learning

Master essential English vocabulary with a focused approach. This app utilizes C.K. Ogden's 850 core words, offering definitions, audio, flashcards, and practice exercises to build a strong foundation for reading and everyday communication.

Highlights
  • Offline 850-word library
  • IPA and US/UK audio pronunciation
  • Flashcard practice
  • Immersion mode
  • Synonym notes
  • Phrase patterns and memory stories
  • Daily progress tracking
Features
Read full description

Kay is a full English learning app—not flashcards alone. Study real video and audio with captions, grow vocabulary with a clear memory system, and use AI when you need deeper help. VIDEO & LISTENING • YouTube caption study: tap any word, bilingual lines, karaoke-style follow-along, and a focused player built for learning • BBC 6 Minute English: pre-listening questions, word-level follow, favorites, sentence loop, search & filters, saved progress • Family Album, U.S.A.: full-series listening with cleaner intros and tighter highlighting • Offline video cache with resume—keep studying on the go VOCABULARY & REVIEW • Mark words Unfamiliar / Fuzzy / Mastered / Known—Known words leave daily review • Unified Today Study: reviews first, then new words • Flashcards, practice drills, and listen-along share one progress model • IPA, UK/US audio, definitions, examples, and synonym notes • Optional Ogden Basic English 850 and Basic 1368 word lists for a clear foundation • Study Core 3000 and Core 5000; Longman 3000 is coming soon for the next common-word list AI STUDY TOOLS • Sentence generation, writing coach, and English diary feedback • Deep word analysis, memory cards, and word-family maps • In-context explain for a word inside the current subtitle or sentence COURSES & NOTES • New Concept English courses with progress and mastery filters • Text notes with karaoke highlight, font controls, and import • Select multi-word phrases and mark familiarity ACCOUNT & PRO • Sign in to sync study data across devices; monthly learning board • Free core learning; AI Pro / Pro+ for higher AI limits, AI captions, and expanded offline • Daily word home-screen widget • No ads Privacy: study progress stays on device and can sync when signed in. Minimal first-party analytics help improve reliability—no third-party ad SDK. Kay is for learners who want English from real media plus a serious word system—not another isolated word list. Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Echo Loop4 screens
Kay English Learning4 screens

Verdict

The call

The clearest difference is rating: Kay English Learning at 4.5 against Echo Loop's 4.0. Kay English Learning also leads on review sentiment (100% vs 83%). Echo Loop's advantage is ratings volume (11 vs 2). On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Echo Loop sells 2 in-app purchases, starting at $8.99 per month and Kay English Learning sells 7 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Kay English Learning holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: Echo Loop has 11 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 83% of Echo Loop's written reviews are positive against 100% of Kay English Learning's.

UpkeepUpdate frequency

Echo Loop ships an update every 4 days, Kay English Learning every 5 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
Echo Loop versus Kay English Learning: the parameters behind the verdict, then further details
ParameterEcho LoopKay English Learning
PriceFreeFree
Rating4.0 (11 ratings)4.5 (2 ratings) — better
Positive reviews83.3% of reviews100.0% of reviews — better
Number of ratings11 — better2
Update frequencyEvery 4 days — betterEvery 5 days
AdsNoNo
In-app purchasesYesYes
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size165 MB467 MB
Age rating4+4+
DeveloperHangzhou Fengchen Hangqi Management Consulting Co., Ltd小琦 王

Customer experience

Echo Loop

All ratings11 ratings
Positive72.7%
Neutral0.0%
Negative27.3%
Written reviews6 reviews
Positive83.3%
Neutral0.0%
Negative16.7%

Kay English Learning

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Echo Loop

Subscriptions2
  • Echo Loop Plus Monthly$8.991 Month
  • Echo Loop Plus Annual1 Year trial$59.991 Year
7 purchases

Kay English Learning

Subscriptions6
  • AI Writing Monthly$0.991 Month
  • Kay Support$1.991 Month
  • Monthly$2.991 Month
Show 3 more
  • AI Pro+$3.991 Month
  • 3 Months$6.993 Months
  • Yearly$19.991 Year
One-time1
  • Kay Pro Lifetime$59.99

Questions

Is Echo Loop free?
Echo Loop is free to download, with in-app purchases available.
Is Kay English Learning free?
Kay English Learning is free to download, with in-app purchases available.
Which has better reviews, Echo Loop or Kay English Learning?
Kay English Learning is rated higher. Echo Loop averages 4.0 out of 5 from 11 ratings, while Kay English Learning averages 4.5 from 2 ratings.
Do Echo Loop or Kay English Learning have ads?
Neither Echo Loop nor Kay English Learning shows ads.
Which is updated more often, Echo Loop or Kay English Learning?
Echo Loop ships an update every 4 days, and Kay English Learning every 5 days. Most recently, Echo Loop was updated on November 5, 2026 and Kay English Learning on October 31, 2026.

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